Sand, sand, sand, sand and gravel. Less than a mile away, downhill, there was a gravel pit for 30+ years or so. Did I mention the soil is rather porous?
So I'm pretty sure a liner will be required. Maybe until they see the price that is.
GLAN, not sure I would want to take a chance on glueing liners together, but that might be the only option. I'm checking some local suppliers to see if this is even a reasonable request. I think Dale's on the right track, once it's rolled out, it's rolled out. I know I'm shuddering at the thought of rerolling and reunrolling.